Is anyone using the Redrock Micromatte box on their Ex3? If so, aside from the required support rails, does the setup necessitate an adapter for use with the standard lens? The Redrock web site does not seem to provide that sort of info.

the standard lens provided with the camera will fit nicely to the RR Mattebox via rails. However, if you use a 35mm adapter ... you will need a way to fit the lens into the center of the donut. Snorkel up on the 35mm adapter may do the trick but cannot say. I know there is a solution out there but I don't have it yet.

Thank you for your input.
I am now considering several other Matte Box alternatives that may or may not present with the 35mm issue that you alluded to.

I've been using the Red Rock mattebox for almost a year now with my EX3 and with the Letus Extreme. The swing away feature is a great bonus with the Letus, it has two small rails on the side for adjustment with various lenses as well as an inch or so up and down for centering the donut (in addition to the rails). Without the Letus is snugs right up against the microphone but works just fine.
I'm using Zacuto rails, heavy but solid.
The mattebox kit came with all the flags and donuts - a great value. Years ago I bought a well known German mattebox for my 600 and paid three times as much as the red rock, and all the options were....optional.

Hello and thank you for your response.
I had considered removing the Redrock from my list of possibles after reading several posts suggesting that their customer support was less than stellar. I have never actually seen the micromatte in person, having viewed photos only, but it does appear to be a good value considering the alternatives (Petrof, Chrosiel, Arri, etc.) and will again place it on the top of my list.

It is a large beast though. Like bolting a VW Beetle onto your EX. Those German matteboxes are far lighter. Some less than 1/4 the weight.

It is a large beast though. Like bolting a VW Beetle onto your EX. Those German matteboxes are far lighter. Some less than 1/4 the weight.

It's large and I'd still buy it for the quality per price point. It will last for years and work on a number of cameras. It's still a beast !!!

We've been using the Red Rock Micromatte box (and microfilters) since January and we're pretty happy with it considering the price. We use it with both the Letus Ultimate and without. I don't like how their donuts don't fit any of our 35mm lenses, although it fits pretty close on the stock EX3 lens. The quality is really good considering the cost. But yes, it's very heavy. If I was going to do it again I'd buy a smaller/lighter mattebox. But that's assuming I had the money. Most of the light weight units are about twice the price.

It is a large beast though. Like bolting a VW Beetle onto your EX. Those German matteboxes are far lighter. Some less than 1/4 the weight.

Which German Matte Boxes were you alluding to?